At least to me, it is pretty clear. Because while there is actually a considerable improvement in the conditions, the same amount of energy is being spent on what is a reduced problem.
Read some of the 0/1 star reviews people post about cruise ships.
"The lifts were sometimes a little crowded"
"Not enough TV channels in my room"
"People told me about this great ice sculpture but it was melting so they took it away before I had a chance to see it"
You can spend millions solving every possible problem, giving people a level of safety and luxury undreamed of by generations past; an army of doting servants waiting to fulfil every whim, and people still conjure up grievances.